Weird didn’t everyone learn XY on paper on a desk first? All they did was add z axis to that original concept for elevation which gives us the bottom image.
Top image is like if I held paper straight parallel to my face.
didn’t everyone learn XY on paper on a desk first?
No. I was plugging in crazy combinations of r, theta, x, y, z, t, and anything else shown in the built-in demo of that old Mac 3D graphing calculator app years before my teachers got to explaining coordinate systems. I had no idea what most of it meant, but I could make cool looking animated graphics as a third grader…
Also, I found GameMaker which introduced me to using X to the right and Y down in 2D (with the origin in the top-left corner) before algebra was taught to me in school…
That’s basically what it comes down to: Is your XY plane a piece of paper that you look at from the top, or is it the pixel coordinates of the screen you are looking through?
That’s why X is usually not contested, because it’s the same on a piece of paper that you view top-down and on a screen that you view from the front.
Y is then one of the two potential axies for either a top-down or a side-scrolling view, and Z is the remaining axis.
Weird didn’t everyone learn XY on paper on a desk first? All they did was add z axis to that original concept for elevation which gives us the bottom image.
Top image is like if I held paper straight parallel to my face.
No. I was plugging in crazy combinations of r, theta, x, y, z, t, and anything else shown in the built-in demo of that old Mac 3D graphing calculator app years before my teachers got to explaining coordinate systems. I had no idea what most of it meant, but I could make cool looking animated graphics as a third grader…
Also, I found GameMaker which introduced me to using X to the right and Y down in 2D (with the origin in the top-left corner) before algebra was taught to me in school…
When working in 2 dimensions with gravity, it is common to treat Y as up. E.g, 2d video games, physics problems, computer screens.
That’s basically what it comes down to: Is your XY plane a piece of paper that you look at from the top, or is it the pixel coordinates of the screen you are looking through?
That’s why X is usually not contested, because it’s the same on a piece of paper that you view top-down and on a screen that you view from the front.
Y is then one of the two potential axies for either a top-down or a side-scrolling view, and Z is the remaining axis.
Well no. First the teacher drew it on the board, hence Y pointing up at the ceiling.
Then we switched to paper and discovered Y pointing somewhere else was somehow the same thing.
So the right answer to the OP is probably that “they’re the same picture” meme.